You mean ol' horseface?
I prefer the "Butterface" Joke.
Someone asks you about a girl.
You say "You mean Butterface?"
How in the heck did she get the nickname Butterface?
You reply: "Everything's good.. but her face."
They'll either think it's absolutely hilarious and you'll make a new friend, or they'll just think you're an asshole.
Personally, I'm happy with either response.